Mountain pipeline hydraulic inner aligner

Abstract

The application is suitable for the technical field of mouthpiece, and provides a mountain pipeline hydraulic internal mouthpiece, which comprises a first connecting ring, a second connecting ring, a three-claw positioning mechanism, a tensioning mechanism and a driving mechanism, and the tensioning mechanism is arranged at the rear end of the first connecting ring. The mountain pipeline hydraulic internal mouthpiece is provided with the three-claw positioning mechanism, three identical components in the three-claw positioning mechanism are circumferentially and uniformly fixed at the upper and left and right positions of the front framework, three hydraulic rods are elongated to drive the linkage rods to extend outward and drive the limiting plates to be ejected outward, the limiting plates are just located at the middle of the two rows of tensioning claws when the hydraulic rods are completely ejected, and the limiting plates are just perpendicular to the central axis of the mouthpiece, so that when the mouthpiece retreats, the three limiting plates are tightly abutted on the pipe opening, the coaxiality of the mouthpiece and the pipeline is guaranteed, the error of the mouthpiece is reduced as much as possible, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mouthpiece, and particularly relates to a pipeline hydraulic internal mouthpiece for mountainous areas. BACKGROUND

[0002] According to the urban distribution and natural geographical characteristics of China, most of the eastern, southern and southwestern regions are mainly mountainous and hilly and densely populated, and the future demand is huge. In order to avoid town planning and infrastructure construction, the proportion of mountainous pipeline in pipeline construction will be more and more heavy in the future. For example, most of the pipeline engineering in west and north Guangdong being constructed is mountainous and hilly terrain. Compared with manual welding and semi-automatic welding, pipeline automatic welding has high efficiency. Taking pipeline diameter Φ1422 as an example, a unit can complete about 15-20 welds per day on average under normal circumstances, which is 2-3 times that of semi-automatic welding. In order to meet the development needs of pipeline and improve the efficiency of pipeline construction, it is very urgent to fully implement automatic welding of pipeline girth weld. In recent years, many pipeline failure accidents are mainly caused by pipeline girth weld fracture. The main reasons are: the development of steel smelting and pipe manufacturing technology is rapid, the development of welding technology is lagging behind, which leads to the fact that the girth weld welding construction basically adopts self-protection semi-automatic welding or manual downward welding technology, and there are many human factors, mainly reflected in the unstable welding quality of girth weld, many welding defects, poor toughness of weld metal, unstable mechanical properties, and universal existence of weld micro-cracks. Especially in poor construction environment, the residual stress of pipeline assembly is large, the geological conditions are poor, and the construction difficulty of mountainous and hilly areas is large, the failure rate of welded joints is higher than that of flat terrain, and it is necessary to make breakthrough research on welding equipment and technology. At the same time, the advantages of pipeline automatic welding are that the welding process parameters are easy to control, the welding process is stable, the mechanical properties of the weld are excellent, and the welding parameters can be collected and transmitted in real time. Combined with the terrain proportion, frequent disasters and large population of China's mountainous and hilly areas, full-automatic welding construction is very important to ensure the safety of pipeline body, public and environment. It is inevitable to study the full-automatic welding equipment and process method based on mountainous terrain, and the internal mouthpiece is one of the most important equipment for full-automatic welding construction.

[0003] Most of the existing inner aligning devices are used for pipeline construction in plain areas, and the outer aligning device or semi-automatic welding manual welding process is generally used in mountainous areas. The existing pneumatic inner aligning device cannot realize pipe mouth shaping, the quality of the pipe mouth formed is poor, and the welding construction requirements cannot be met. The driving force of the single-motor aligning device is small, which cannot meet the climbing requirements. The aligning device with no flexible connection is too long to pass the bend, and even if the flexible connection aligning device is added, the equipment cannot be guaranteed to be in the center of the pipe. The aligning device with external hydraulic station has too many connecting pipes, which is not conducive to the operation in the construction environment of marshes and fields. The aligning device with conventional side support structure is easy to deviate in the pipe and is not easy to adjust and correct. The existing aligning device basically uses chain transmission. If the chain is disconnected during slope construction, the equipment will be completely out of control and will rush out of the pipe mouth. The meshing gap of the chain transmission is large, and the aligning device has a large amount of movement during parking on the slope. The conventional aligning device generally does not have a guide wheel, and the bending resistance is large and the anticorrosion layer in the pipe is easy to scratch. SUMMARY

[0004] The present application provides a mountain pipeline hydraulic inner aligning device, which aims to solve the problems mentioned in the background art.

[0005] The present application is implemented as follows: a mountain pipeline hydraulic inner aligning device, comprising a front frame structure, a rear frame structure, a three-claw positioning mechanism, a tensioning mechanism, and a driving mechanism.

[0006] The front frame structure comprises a first connecting ring, the front end surface of the first connecting ring is transversely fixedly connected with three connecting rods bent towards the central axis of the first connecting ring, and the front ends of the plurality of connecting rods are fixedly connected with traction heads.

[0007] The rear frame structure comprises a second connecting ring, the rear end of the second connecting ring is transversely fixedly connected with a plurality of first connecting rods, and the rear ends of the plurality of first connecting rods are fixedly connected with a first connecting disc.

[0008] The tensioning mechanism is arranged between the front frame structure and the rear frame structure, the rear end of the first connecting disc is fixedly connected with a universal joint, the rear end of the universal joint is fixedly connected with a second connecting disc, the rear end of the second connecting disc is transversely fixedly connected with a plurality of second connecting rods, the rear ends of the plurality of second connecting rods are fixedly connected with a third connecting disc, the rear end of the third connecting disc is transversely fixedly connected with a plurality of third connecting rods, the rear ends of the plurality of third connecting rods are fixedly connected with a fourth connecting disc, and the three-claw positioning mechanism is arranged inside the front frame structure.

[0009] The three-claw positioning mechanism comprises a fixed seat fixedly connected to the rear end surface of the traction head and located between each two connecting rods, a hydraulic rod rotatably connected to the rear end of each of the plurality of fixed seats, a plurality of connecting seats corresponding to the plurality of hydraulic rods and fixedly connected to the front end surface of the first connecting ring, a linkage rod provided between the hydraulic rod and the corresponding connecting seat, and a limiting plate fixedly connected to the outer surface of the linkage rod.

[0010] A transition guide roller is rotatably connected to the middle part of the outer surface of each of the plurality of connecting rods, and a front guide roller is rotatably connected to the rear end of the outer surface of each of the plurality of connecting rods.

[0011] Preferably, the tensioning mechanism comprises a first device ring fixedly connected to the rear end of the first connecting ring, a circular intermediate plate fixedly connected to the rear end of the first device ring, a second device ring with the same specifications as the first device ring and fixedly connected to the rear end of the intermediate plate, a device frame fixedly connected to the front end of the first device ring and the rear end of the second device ring, an installation hole horizontally provided through the center of the outer surface of the intermediate plate, a guide column horizontally fixedly connected to the inside of the installation hole, the two ends of the guide column extending into the interiors of the two device frames, a sliding sleeve slidingly connected to each end of the guide column along the length direction of the guide column, a first movable disc and a second movable disc fixedly connected to the outer surfaces of the two sliding sleeves, a plurality of first sliding holes and a plurality of second sliding holes horizontally provided through the outer surfaces of the first device ring and the second device ring along the radial direction of the cross section of the first device ring and the second device ring, a plurality of first jacking shafts and a plurality of second jacking shafts slidingly connected to the interiors of the plurality of first sliding holes and the plurality of second sliding holes, a plurality of first pin shafts corresponding to the plurality of first jacking shafts and fixedly connected to the rear end surface of the first movable disc, a plurality of second pin shafts corresponding to the plurality of second jacking shafts and fixedly connected to the front end surface of the second movable disc, a first linkage strip provided between the first pin shaft and the corresponding first jacking shaft, the two ends of the first linkage strip rotatably connected to the surface of the first pin shaft and the inner end of the first jacking shaft, a second linkage strip provided between the second pin shaft and the corresponding second jacking shaft, and the two ends of the second linkage strip rotatably connected to the surface of the second pin shaft and the inner end of the second jacking shaft.

[0012] Preferably, the outer ends of the plurality of first jacking shafts and the plurality of second jacking shafts are fixedly connected to jacking claws, the outer ends of the two device frames are fixedly connected to first hydraulic devices, the other ends of the push rods of the two first hydraulic devices are slidably and horizontally provided through the two device frames and fixedly connected to the outer ends of the two sliding sleeves, and the second connecting ring is fixedly connected to the rear side surface of the second device ring.

[0013] Preferably, a fixing frame plate is fixedly connected between the third connecting plate and the fourth connecting plate, the driving mechanism is slidingly connected to the inner side surface of the fixing frame plate, the driving mechanism comprises a wheel inner ring sleeve slidingly connected to the lower surface of the fixing frame plate in the length direction of the fixing frame plate, a driving wheel is rotatably connected to the outer surface of the wheel inner ring sleeve through a bearing, a motor fixing plate is fixedly connected to the inner surface of one end of the wheel inner ring sleeve, a gear fixing plate is fixedly connected to the outer side surface of the motor fixing plate, a hydraulic motor is fixedly connected to the inner side surface of the motor fixing plate, the output shaft of the hydraulic motor extends to the outside of the gear fixing plate through the motor fixing plate and the gear fixing plate, a plurality of planetary gears are rotatably connected to the outer side surface of the gear fixing plate, a driving gear meshing with the plurality of planetary gears is fixedly connected to the surface of the output shaft of the hydraulic motor, and an inner tooth ring is fixedly connected to one side surface of the driving wheel and meshes with the plurality of planetary gears.

[0014] Preferably, a dust cover is fixedly connected to the outer end of the inner tooth ring, a threaded sleeve is fixedly connected to the upper surface of the fixing frame plate, a threaded rod is threadedly connected to the inside of the threaded sleeve, the central axis of the threaded rod is parallel to the center line in the length direction of the fixing frame plate, a clamping block is rotatably connected to the bottom end of the threaded rod, and the bottom end of the clamping block is fixedly connected to the outer surface of the wheel inner ring sleeve.

[0015] Preferably, a pressure display table and a display are fixedly connected between the two connecting rods.

[0016] Preferably, a plurality of screw rod sleeves are rotatably connected to the front end surface of the first connecting plate, a screw rod is transversely and threadedly connected to the inside of each of the plurality of screw rod sleeves, the other end of each of the plurality of screw rods extends to between the first connecting plate and the second connecting plate through the first connecting plate in a rotatable manner, an adjusting seat is rotatably connected to the outer surface of each of the plurality of screw rods and located between the first connecting plate and the second connecting plate, a limiting seat corresponding to each adjusting seat is fixedly connected to the front end surface of the second connecting plate, and a spring is fixedly connected between the corresponding limiting seat and the adjusting seat.

[0017] Preferably, a second hydraulic device is fixedly connected to the top end of the fixing frame plate, a transition rod is vertically fixedly connected to the top end of the pushing rod of the second hydraulic device, a wheel frame is fixedly connected to the top end of the transition rod, and an upper guide wheel is rotatably connected to the inside of the wheel frame.

[0018] Preferably, a battery, a brake assembly, and a hydraulic station are arranged between the second connecting plate and the third connecting plate.

[0019] Advantages

[0020] Compared with the prior art, the present application has the following advantages:

[0021] (1), the mountain pipeline hydraulic inner aligning device of the application, through the setting of three claw positioning mechanism, three identical components in three claw positioning mechanism are evenly distributed and fixed on the top and both sides of the front skeleton, three hydraulic rods are elongated to drive the linkage rod to extend outward, thereby driving the limiting plate to pop out, when the hydraulic rod is completely popped out, the limiting plate is just located in the middle of the two rows of expanding claws, and the limiting plate is just perpendicular to the center axis of the aligning device, so that when the aligning device retreats, as long as the three limiting plates are tightly abutted on the pipe opening, the coaxiality of the aligning device and the pipeline can be ensured, and the error of aligning edge can be minimized as much as possible.

[0022] (2), the mountain pipeline hydraulic inner aligning device of the application, through the setting of the driving mechanism, the output shaft of the hydraulic motor is directly connected with the power gear, and the rotating speed of the motor is reduced to a suitable value through the planetary gear reduction mechanism, so as to ensure that the crawling speed of the aligning device meets the construction requirements, the biggest advantage of the planetary gear mechanism is compact structure, which can realize high-power transmission, the planetary gear train can simultaneously transmit motion and power through several evenly distributed planetary gears, the radial components of centrifugal inertia force and reaction force between tooth profiles generated by these planetary gears can be balanced with each other, so that the main shaft is subjected to small force and large power transmission, in addition, since it adopts internal meshing gear, the transmission space is fully utilized, and the input and output shafts are on a straight line, so the space size of the entire train is much smaller than that of the ordinary fixed shaft gear train under the same conditions, this train is particularly suitable for the mountain inner aligning device which requires the equipment to be as short and light as possible, and the short equipment is more conducive to bending, and the light equipment is more conducive to climbing. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0024] Figure 2 It is a schematic diagram of the structure of the three claw positioning mechanism in the present application;

[0025] Figure 3 It is a schematic diagram of the structure of the tensioning mechanism in the present application;

[0026] Figure 4 It is a schematic diagram of the side view structure of the tensioning mechanism in the present application;

[0027] Figure 5 It is a schematic diagram of the internal structure of the third connecting disc and the fourth connecting disc in the present application;

[0028] Figure 6 It is a schematic diagram of the position of the driving mechanism in the present application;

[0029] Figure 7Figure is the schematic diagram of the planetary wheel structure in the driving mechanism in the application;

[0030] Figure 8 Figure is the schematic diagram of the sectional structure of the driving mechanism in the application;

[0031] Figure 9 Figure is the schematic diagram of the flexible connection structure in the application.

[0032] In the figure: 1, first connecting ring; 2, three-jaw positioning mechanism; 201, fixed seat; 202, hydraulic rod; 203, connecting seat; 204, linkage rod; 205, limiting plate; 206, pressure display table; 207, display; 3, tensioning mechanism; 301, first device ring; 302, middle plate; 303, second device ring; 304, device frame; 305, guide column; 306, first movable disc; 307, second movable disc; 308, first jacking shaft; 309, second jacking shaft; 310, first linkage strip; 311, first hydraulic device; 312, sliding sleeve; 313, second linkage strip; 314, jacking claw; 4, second connecting ring; 5, first connecting rod; 6, first connecting disc; 7, universal coupling; 8, second connecting disc; 9, spring; 10, second connecting rod; 11, third connecting disc; 12, third connecting rod; 13, fourth connecting disc; 14, fixed frame plate; 15, driving mechanism; 151, inner ring of wheel; 152, bearing; 153, driving wheel; 154, motor fixed plate; 155, hydraulic motor; 156, gear fixed plate; 157, planetary wheel; 158, inner tooth ring; 159, power gear; 1510, dust cover; 1511, screw; 16, second hydraulic device; 17, transition rod; 18, wheel frame; 19, upper guide wheel; 20, threaded sleeve; 21, threaded rod; 22, battery; 23, brake assembly; 24, hydraulic station; 25, screw sleeve; 26, screw rod; 27, adjusting seat; 28, connecting rod; 29, traction head; 30, transition guide wheel; 31, front guide wheel. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the application more clear, the application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and do not limit the application.

[0034] Please refer to Figures 1-9 The application provides a technical scheme: a pipeline hydraulic inner aligning device for mountainous areas, which comprises a front frame structure, a rear frame structure, a three-jaw positioning mechanism 2, a tensioning mechanism 3, and a driving mechanism 15.

[0035] The front skeleton structure comprises a first connecting ring 1, the front end surface of the first connecting ring 1 is fixedly connected with three connecting rods 28 which are bent towards the central axis of the first connecting ring 1, the front end of the plurality of connecting rods 28 is fixedly connected with a traction head 29;

[0036] The rear skeleton structure comprises a second connecting ring 4, the rear end of the second connecting ring 4 is fixedly connected with a plurality of first connecting rods 5, the rear end of the plurality of first connecting rods 5 is fixedly connected with a first connecting disc 6;

[0037] The tensioning mechanism 3 is arranged between the front skeleton structure and the rear skeleton structure, the rear end of the first connecting disc 6 is fixedly connected with a universal joint 7, the rear end of the universal joint 7 is fixedly connected with a second connecting disc 8, the rear end of the second connecting disc 8 is fixedly connected with a plurality of second connecting rods 10, the rear end of the plurality of second connecting rods 10 is fixedly connected with a third connecting disc 11, the rear end of the third connecting disc 11 is fixedly connected with a plurality of third connecting rods 12, the rear end of the plurality of third connecting rods 12 is fixedly connected with a fourth connecting disc 13, and the three-jaw positioning mechanism 2 is arranged inside the front skeleton structure.

[0038] In the embodiment, the device comprises three main mechanisms, i.e., the three-jaw positioning mechanism 2, the tensioning mechanism 3 and the driving mechanism 15, and a plurality of small structures, the three-jaw positioning mechanism 2 is arranged at the front end of the device, the tensioning mechanism 3 is arranged at the rear of the three-jaw positioning mechanism 2, the structure of the tensioning mechanism 3 in the device is the same as that of a common pneumatic tensioning device, but the tensioning operation is performed in a hydraulic transmission mode, the tensioning force is large, the driving mechanism 15 provides power for the whole device, and drives the whole device to move forward or backward.

[0039] Further, the tensioning mechanism 3 comprises a first device ring 301 fixedly connected to the rear end of the first connecting ring 1, a circular intermediate plate 302 fixedly connected to the rear end of the first device ring 301, a second device ring 303 of the same specification as the first device ring 301 fixedly connected to the rear end of the intermediate plate 302, a device frame 304 fixedly connected to the front end of the first device ring 301 and the rear end of the second device ring 303, an installation hole horizontally and through the center of the outer surface of the intermediate plate 302, a guide column 305 horizontally fixedly connected inside the installation hole, the two ends of the guide column 305 respectively extending to the inside of the two device frames 304, a sliding sleeve 312 slidingly connected to the two ends of the guide column 305 along the length direction of the guide column 305, a first movable disc 306 and a second movable disc 307 fixedly connected to the outer surfaces of the two sliding sleeves 312 respectively, a plurality of first sliding holes and a plurality of second sliding holes horizontally and through the cross-sectional radius direction of the outer surfaces of the first device ring 301 and the second device ring 303 respectively, a plurality of first jacking shafts 308 and a plurality of second jacking shafts 309 slidingly connected inside the plurality of first sliding holes and the plurality of second sliding holes respectively, a plurality of first pin shafts fixedly connected to the rear end surface of the first movable disc 306 corresponding to the plurality of first jacking shafts 308 respectively, a plurality of second pin shafts fixedly connected to the front end surface of the second movable disc 307 corresponding to the plurality of second jacking shafts 309 respectively, a first linkage strip 310 provided between the first pin shaft and the corresponding first jacking shaft 308, the two ends of the first linkage strip 310 being rotatably connected to the surface of the first pin shaft and the inner end of the first jacking shaft 308 respectively, and a second linkage strip 313 provided between the second pin shaft and the corresponding second jacking shaft 309, the two ends of the second linkage strip 313 being rotatably connected to the surface of the second pin shaft and the inner end of the second jacking shaft 309 respectively.

[0040] The outer ends of the plurality of first jacking shafts 308 and the plurality of second jacking shafts 309 are fixedly connected with jacking claws 314, the outer ends of the two device frames 304 are fixedly connected with first hydraulic devices 311, the other ends of the push rods of the two first hydraulic devices 311 are slidably through the two device frames 304 and are fixedly connected to the outer ends of the two sliding sleeves 312 respectively, and the second connecting ring 4 is fixedly connected to the rear surface of the second device ring 303.

[0041] In the embodiment, after the two first hydraulic devices 311 are started, the pushing rods of the two first hydraulic devices 311 are displaced towards the middle plate 302, so as to drive the two sliding sleeves 312 to be displaced in the opposite direction, and drive the first movable disc 306 and the second movable disc 307 to be displaced, respectively. In the process of the movement of the first movable disc 306 and the second movable disc 307, the first movable disc 306 and the second movable disc 307 drive the first lifting shafts 308 and the second lifting shafts 309 to move through the first linkage bars 310 and the second linkage bars 313, respectively. The first lifting shafts 308 and the second lifting shafts 309 can only move in the radial direction of the cross section of the first device ring 301 and the second device ring 303 under the limitation of the first sliding hole and the second sliding hole, so as to drive the lifting claws 314 to move towards the outside of the first device ring 301 and the second device ring 303 and tightly contact the inner surface of the pipeline, thereby achieving the effect of tensioning.

[0042] The guide column 305 connects the two sliding sleeves 312, so that the two sliding sleeves 312 can move along the length direction of the guide column 305 when the first hydraulic device 311 drives the two sliding sleeves 312 to move.

[0043] Further, the three-claw positioning mechanism 2 comprises a fixed seat 201 fixedly connected to the rear end surface of the traction head 29 and located between every two connecting rods 28, a hydraulic rod 202 rotatably connected to the rear end of each of the plurality of fixed seats 201, a plurality of connecting seats 203 fixedly connected to the front end surface of the first connecting ring 1 and corresponding to the plurality of hydraulic rods 202, a linkage rod 204 arranged between the hydraulic rod 202 and the corresponding connecting seat 203, and a limiting plate 205 fixedly connected to the outer surface of the linkage rod 204.

[0044] The outer surface of each of the plurality of connecting rods 28 is rotatably connected to a transition guide wheel 30, and the rear end of the outer surface of each of the plurality of connecting rods 28 is rotatably connected to a front guide wheel 31.

[0045] In the embodiment, the plurality of connecting rods 28 and the first connecting ring 1 of the three-claw positioning mechanism 2 form a conical framework, three identical assemblies are circumferentially arranged on the top and both sides of the front framework, the three hydraulic rods 202 are elongated to drive the linkage rod 204 to extend outward and drive the limiting plate 205 to be pushed outward, and when the hydraulic rod 202 is completely pushed out, the limiting plate 205 is located at the center of the two rows of lifting claws 314, and the limiting plate 205 is perpendicular to the central axis of the adapter, so that when the adapter retreats, the three limiting plates 205 are tightly arranged on the pipe opening, so as to ensure that the adapter is coaxial with the pipeline and minimize the edge error of the adapter.

[0046] Further, the front end surface of the first connecting disc 6 is rotationally connected with a plurality of screw rod sleeves 25, the interiors of the plurality of screw rod sleeves 25 are transversely screw-connected with a plurality of screw rods 26, the other ends of the plurality of screw rods 26 are rotationally penetrated through the first connecting disc 6 and extend between the first connecting disc 6 and the second connecting disc 8, the outer surfaces of the plurality of screw rods 26 and between the first connecting disc 6 and the second connecting disc 8 are rotationally connected with a plurality of adjusting seats 27, the front end surface of the second connecting disc 8 is fixedly connected with a plurality of limiting seats corresponding to the plurality of adjusting seats 27 respectively, and the corresponding limiting seat and the adjusting seat 27 are fixedly connected with a spring 9.

[0047] In the embodiment, the rotation of the screw rod sleeve 25 can drive the screw rod 26 to move, so as to change the distance between the adjusting seat 27 and the limiting seat, so as to change the tightness of the spring 9. The first connecting disc 6 and the second connecting disc 8 are connected through the universal joint 7 to form a flexible connection. The flexible connection means that the position of the transmission axis direction of the hydraulic inner aligning device is changed through the universal joint 7, so as to realize the power transmission with variable angle. In order to make the aligning device freely swing at any angle and ensure a certain degree of strength support, the front end of the device does not "lower" to affect the aligning error.

[0048] The device with flexible connection is difficult to be coaxial with the pipe during aligning. A pre-corrected reference surface is given through the limiting plate 205 of the three-jaw positioning mechanism 2, and the posture of the aligning device is automatically adjusted in the pipeline through the force of the motor when the aligning device retreats. As long as the three limiting plates 205 uniformly distributed on the circumference can tightly adhere to the pipe opening, it can be verified that the pipe opening plane is perpendicular to the central axis of the aligning device.

[0049] Further, the third connecting disc 11 and the fourth connecting disc 13 are fixedly connected with a fixed frame plate 14, and the driving mechanism 15 is slidingly connected to the inner side surface of the fixed frame plate 14. The driving mechanism 15 comprises a wheel inner ring sleeve 151 slidingly connected to the lower surface of the fixed frame plate 14 along the length direction of the fixed frame plate 14. The outer surface of the wheel inner ring sleeve 151 is rotationally connected with a driving wheel 153 through a bearing 152. The inner surface of one end of the wheel inner ring sleeve 151 is fixedly connected with a motor fixed plate 154. The outer side surface of the motor fixed plate 154 is fixedly connected with a gear fixed plate 156. The inner side surface of the motor fixed plate 154 is fixedly connected with a hydraulic motor 155. The output shaft of the hydraulic motor 155 is rotationally penetrated through the motor fixed plate 154 and the gear fixed plate 156 and extends to the outside of the gear fixed plate 156. The outer side surface of the gear fixed plate 156 is rotationally connected with a plurality of planetary gears 157. The surface of the output shaft of the hydraulic motor 155 is fixedly connected with a power gear 159 meshing with the plurality of planetary gears 157. One side surface of the driving wheel 153 is fixedly connected with an inner tooth ring 158, and the inner tooth ring 158 meshes with the plurality of planetary gears 157.

[0050] The outer end of the inner tooth ring 158 is fixedly connected with a dust cover 1510, the upper surface of the fixed frame plate 14 is fixedly connected with a threaded sleeve 20, the inner part of the threaded sleeve 20 is threadedly connected with a threaded rod 21, the central axis of the threaded rod 21 is parallel to the central line of the fixed frame plate 14 in the length direction, and the bottom end of the threaded rod 21 is rotatably connected with a clamping block, and the bottom end of the clamping block is fixedly connected to the outer surface of the inner ring sleeve 151.

[0051] In the embodiment, the fixed frame plate 14 is in a trapezoidal structure, two driving mechanisms 15 are arranged, and the structures of the two driving mechanisms 15 are the same, and the two driving mechanisms 15 are arranged at the bottom ends of the two sides of the fixed frame plate 14, the output shaft of the hydraulic motor 155 is directly connected with the driving gear 159, and the rotation speed of the motor is reduced to a suitable value through the planetary gear 157 speed reduction mechanism, the rotation of the plurality of planetary gears 157 drives the rotation of the inner tooth ring 158 meshed with the planetary gears 157, and the inner tooth ring 158 is directly connected with the driving wheel 153 through a plurality of screws 1511, so as to drive the rotation of the driving wheel 153, thereby providing power for the whole device, and the crawling speed of the aligning device meets the construction requirements.

[0052] The driving gear 159, the plurality of planetary gears 157 and the inner tooth ring 158 are combined to form a planetary gear structure, and the biggest advantage of the planetary gear structure is compact structure, which can realize large power transmission, the planetary gear can simultaneously transmit motion and power through several evenly distributed planetary gears 157, the centrifugal inertia force and the radial component of the reaction force between the tooth profiles generated by the planetary gears 157 due to revolution can be balanced, so that the main shaft is subjected to small force and large power is transmitted, in addition, since the planetary gear adopts internal meshing gears, the transmission space is fully utilized, and the input and output shafts are on a straight line, so the space size of the whole gear train is much smaller than that of the ordinary fixed shaft gear train under the same conditions, and the gear train is particularly suitable for the aligning device in the mountain area, which is short, light and compact, the short device is more conducive to turning, and the light device is more conducive to climbing.

[0053] The dust cover 1510 plays a dustproof role, and the driving mechanism 15 as a whole can be moved along the length direction of the side edge of the fixed frame plate 14 by rotating the threaded rod 21 under the action of the threaded sleeve 20, so as to change the extension distance of the driving wheel 153 in the driving mechanism 15, thereby adapting to pipes with various wall thicknesses.

[0054] Further, the pressure display table 206 and the display 207 are fixedly connected between the two connecting rods 28.

[0055] In the embodiment, the display 207 can display parameters such as current, voltage and battery capacity of the device, and the pressure display table 206 displays system pressure, side support and upper support oil way pressure respectively.

[0056] Further, the top end of the fixing frame plate 14 is fixedly connected with a second hydraulic device 16, the top end of the pushing rod of the second hydraulic device 16 is vertically fixedly connected with a transition rod 17, the top end of the transition rod 17 is fixedly connected with a wheel frame 18, and the inside of the wheel frame 18 is rotatably connected with an upper guide wheel 19.

[0057] The second connecting disc 8 and the third connecting disc 11 are provided with a battery 22, a brake assembly 23 and a hydraulic station 24.

[0058] In the embodiment, the upper guide wheel 19 facilitates the movement of the device, the stroke of the second hydraulic device 16 is generally designed to be large, and after the piston rod of the second hydraulic device 16 is extended to press the inner wall of the pipe, the extension of the piston rod of the second hydraulic device 16 is limited, so that the device can automatically adjust to different wall thickness pipes.

[0059] The working principle and use process of the present application are as follows: after the present application is installed, when the device is used, the plurality of connecting rods 28 and the first connecting ring 1 in the three-jaw positioning mechanism 2 form a conical framework, three identical assemblies are fixedly arranged on the top and the left and right sides of the front framework, the three hydraulic rods 202 are extended to drive the linkage rods 204 to extend outward, thereby driving the limiting plates 205 to extend outward, when the hydraulic rods 202 are completely extended, the limiting plates 205 are located at the center of the two rows of lifting claws 314, and the limiting plates 205 are perpendicular to the central axis of the adapter, so that when the adapter retreats, as long as the three limiting plates 205 are tightly arranged on the pipe opening, the coaxiality of the adapter and the pipeline can be ensured, and the edge error of the adapter is reduced as much as possible, and the output shaft of the hydraulic motor 155 in the driving mechanism 15 is directly connected with the power gear 159, and the rotation speed of the motor is reduced to a suitable value through the planetary gear 157 speed reduction mechanism, a plurality of planetary gears 157 rotate to drive the internal toothed ring 158 engaged with the planetary gears 157, the internal toothed ring 158 is directly connected with the driving wheel 153, so as to drive the driving wheel 153 to rotate, thereby providing power for the whole device, and the crawling speed of the adapter meets the construction requirements.

[0060] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hydraulic internal aligner for mountain pipelines, characterized in that: The front skeleton structure, the rear skeleton structure, the three-claw positioning mechanism (2), the tensioning mechanism (3), and the driving mechanism (15); The front skeleton structure comprises a first connecting ring (1), and the front end surface of the first connecting ring (1) is transversely fixedly connected with three connecting rods (28) which are bent towards the central axis of the first connecting ring (1), and the front ends of the connecting rods (28) are fixedly connected with traction heads (29); The rear skeleton structure comprises a second connecting ring (4), and the rear end of the second connecting ring (4) is transversely fixedly connected with a plurality of first connecting rods (5), and the rear ends of the first connecting rods (5) are fixedly connected with a first connecting disc (6); The tensioning mechanism (3) is arranged between the front skeleton structure and the rear skeleton structure, the rear end of the first connecting disc (6) is fixedly connected with a universal joint (7), the rear end of the universal joint (7) is fixedly connected with a second connecting disc (8), the rear end of the second connecting disc (8) is transversely fixedly connected with a plurality of second connecting rods (10), the rear ends of the second connecting rods (10) are fixedly connected with a third connecting disc (11), the rear end of the third connecting disc (11) is transversely fixedly connected with a plurality of third connecting rods (12), the rear ends of the third connecting rods (12) are fixedly connected with a fourth connecting disc (13), and the three-claw positioning mechanism (2) is arranged in the interior of the front skeleton structure; The three-claw positioning mechanism (2) comprises a fixed seat (201) which is fixedly connected to the rear end surface of the traction head (29) and is located between every two connecting rods (28), the rear end of each fixed seat (201) is rotatably connected with a hydraulic rod (202), the front end surface of the first connecting ring (1) is fixedly connected with a plurality of connecting seats (203) which correspond to the plurality of hydraulic rods (202) respectively, a linkage rod (204) is arranged between the hydraulic rod (202) and the corresponding connecting seat (203), both ends of the linkage rod (204) are rotatably connected to the front end of the connecting seat (203) and the rear end of the hydraulic rod (202) respectively, and the outer surface of the linkage rod (204) is fixedly connected with a limiting plate (205); The outer surface of each connecting rod (28) is rotatably connected with a transition guide wheel (30) at the middle part, and the outer surface of each connecting rod (28) is rotatably connected with a front guide wheel (31) at the rear end; A pressure display table (206) and a display (207) are fixedly connected between two connecting rods (28); A battery (22), a brake assembly (23), and a hydraulic station (24) are arranged between the second connecting disc (8) and the third connecting disc (11).

2. The hydraulic internal aligner for mountain pipeline according to claim 1, characterized in that: The tensioning mechanism (3) comprises a first device ring (301) fixedly connected to the rear end of the first connecting ring (1), the rear end of the first device ring (301) is fixedly connected with a circular intermediate plate (302), the rear end of the intermediate plate (302) is fixedly connected with a second device ring (303) with the same specification as the first device ring (301), the front end of the first device ring (301) and the rear end of the second device ring (303) are both fixedly connected with a device frame (304), the center of the outer surface of the intermediate plate (302) is transversely provided with a mounting hole, the inside of the mounting hole is transversely fixedly connected with a guide column (305), both ends of the guide column (305) extend into the interiors of the two device frames (304), both ends of the guide column (305) are slidingly connected with a sliding sleeve (312) along the length direction, the outer surfaces of the two sliding sleeves (312) are fixedly connected with a first movable disc (306) and a second movable disc (307) respectively, the outer surfaces of the first device ring (301) and the second device ring (303) are both provided with a plurality of first sliding holes and second sliding holes along the radial direction of the cross section, the interiors of the plurality of first sliding holes and the plurality of second sliding holes are slidingly connected with a plurality of first jacking shafts (308) and a plurality of second jacking shafts (309) respectively, the rear end surface of the first movable disc (306) is fixedly connected with a plurality of first pin shafts corresponding to the plurality of first jacking shafts (308) respectively, the front end surface of the second movable disc (307) is fixedly connected with a plurality of second pin shafts corresponding to the plurality of second jacking shafts (309) respectively, the first pin shaft and the corresponding first jacking shaft (308) are provided with a first linkage strip (310), both ends of the first linkage strip (310) are rotatably connected to the surface of the first pin shaft and the inner end of the first jacking shaft (308) respectively, the second pin shaft and the corresponding second jacking shaft (309) are provided with a second linkage strip (313), both ends of the second linkage strip (313) are rotatably connected to the surface of the second pin shaft and the inner end of the second jacking shaft (309) respectively.

3. The hydraulic internal pipe aligner for mountainous terrain as claimed in claim 2, wherein: The outer ends of the plurality of first jacking shafts (308) and the plurality of second jacking shafts (309) are fixedly connected with a jacking claw (314), the outer ends of the two device frames (304) are fixedly connected with a first hydraulic device (311), the other ends of the push rods of the two first hydraulic devices (311) are slidably through the two device frames (304) and are fixedly connected to the outer ends of the two sliding sleeves (312) respectively, the second connecting ring (4) is fixedly connected to the rear surface of the second device ring (303).

4. The hydraulic internal pipe aligner for mountainous terrain as claimed in claim 1, wherein: The third connecting disc (11) and the fourth connecting disc (13) are fixedly connected with a fixed rack plate (14), the driving mechanism (15) is slidably connected to the inner side surface of the fixed rack plate (14), the driving mechanism (15) comprises a wheel inner ring (151) slidably connected to the lower surface of the fixed rack plate (14) in the length direction of the fixed rack plate (14), the outer surface of the wheel inner ring (151) is rotatably connected with a driving wheel (153) through a bearing (152), the inner surface of one end of the wheel inner ring (151) is fixedly connected with a motor fixed plate (154), the outer side surface of the motor fixed plate (154) is fixedly connected with a gear fixed plate (156), the inner side surface of the motor fixed plate (154) is fixedly connected with a hydraulic motor (155), the output shaft of the hydraulic motor (155) rotatably penetrates the motor fixed plate (154) and the gear fixed plate (156) and extends to the outside of the gear fixed plate (156), the outer side surface of the gear fixed plate (156) is rotatably connected with a plurality of planetary gears (157), the output shaft surface of the hydraulic motor (155) is fixedly connected with a driving gear (159) meshing with the plurality of planetary gears (157), one side surface of the driving wheel (153) is fixedly connected with an inner tooth ring (158), and the inner tooth ring (158) is meshed with the plurality of planetary gears (157).

5. The hydraulic internal pipe aligner for mountainous terrain as claimed in claim 4, wherein: The outer end of the inner tooth ring (158) is fixedly connected with a dust cover (1510), the upper surface of the fixed rack plate (14) is fixedly connected with a threaded sleeve (20), the inside of the threaded sleeve (20) is threadedly connected with a threaded rod (21), the central axis of the threaded rod (21) is parallel to the center line in the length direction of the fixed rack plate (14), the bottom end of the threaded rod (21) is rotatably connected with a clamping block, and the bottom end of the clamping block is fixedly connected to the outer surface of the wheel inner ring (151).

6. The hydraulic internal pipe aligner for mountainous terrain as claimed in claim 1, wherein: The front end surface of the first connecting disc (6) is rotatably connected with a plurality of lead screw sleeves (25), the inside of each of the plurality of lead screw sleeves (25) is transversely and threadedly connected with a lead screw (26), the other end of each of the plurality of lead screws (26) rotatably penetrates the first connecting disc (6) and extends between the first connecting disc (6) and the second connecting disc (8), the outer surface of each of the plurality of lead screws (26) and located between the first connecting disc (6) and the second connecting disc (8) is rotatably connected with an adjusting seat (27), the front end surface of the second connecting disc (8) is fixedly connected with a plurality of limiting seats corresponding to the plurality of adjusting seats (27), and the spring (9) is fixedly connected between the corresponding limiting seat and the adjusting seat (27).

7. The hydraulic internal pipe aligner for mountainous terrain as claimed in claim 4, wherein: The top end of the fixed rack plate (14) is fixedly connected with a second hydraulic device (16), the top end of the pushing rod of the second hydraulic device (16) is vertically fixedly connected with a transition rod (17), the top end of the transition rod (17) is fixedly connected with a wheel frame (18), and the inside of the wheel frame (18) is rotatably connected with an upper guide wheel (19).

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